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F. JUDGE.

CAMERA FOR COMPOSITE HELIOOHROMY.

APPLICATION FILED OCT. ll. Bli- Patefitod Aug. 12, 1919.

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CAMERA FOR COMPOSITE HELIOCHROMY.

nrucmon FILED on. n. I916.

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1 ,3 1 2, 694. Patented Aug. 12, 1919.

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FRED JUDGE, OF HASTINGS, ENGLAND.

CAMERA FOB COMPOSITE HELIOCHROMY.

pecification of Letters Patent.

Patented Aug. 12, 1919.

Application filed October 17, 1916. Serial No. 126,126.

To all whom. it may concern.-

Be it known that I, FRED JUDGE, a subject of His Majesty King George V of the United Kingdom of Great Britain and Ireland and of the British Dominions Beyond the Sea and Emperor of India, residing at Hastings, Sussex, En land, have invented certain new and use ul Improvements in Cameras for Composite Heliochromy, of which the following is a specification.

The present invention relates to improve ments in semiautomatic cameras of the type wherein color sensitive surfaces are carried on a stepwise rotating carrier of disk form, which carrier rotates by part circle stages behind the lens so as to successively expose the separate color sensitive surfaces.

By the present invention is provided a semi-automatic heliochromic camera for multiple or composite heliochromy in which a single color sensitive plate, or the equivalent of a single plate is on a step-wise rotating disk like carrier behind the lens; the invention being characterized in that the carrier is a face plate like the face late of a lathe and is inte ml with a spindle like the mandrel of a iathe; this arrangement conducing to steadiness of action.

An embodiment of the invention as actually constructed and found to work well is figured in the accompanying drawings in which:-

Figures 1 and 2 show two systems of plot ting or apportioning the sensitive surface or plate for exposure.

Fig. 3 is a plan view of a camera, constructed according to this invention.

Fig. 4 is a front sectional view of the camera on the line yy-of Fig. 3.

Fig. 5,.shows the color screen disk.

Fig. 6 shows a roll film system mounted on the carrier. for the sensitive surface.

7 Fig. 7 is a section on 02- -00 Fig. 3 with aspect toward the right.

' 8 and 9 show the locking disk and locking pin res ectively for controlling the step-wise'rotatlon of the carrier for the sensitive surface.

Figs. 10 and 11 are front view and part sectional view online 10 10, Fig. 10, respectively to a reduced scale of the camera box with the mandrel spindle and allied parts removed.

Fig. 12 is a front view, and Fig. 13a side view of the disk for driving the color screen disk.

side of the camera box 1.

Fig. 14 is a front view and Fig. 15 a side view of the disk controlling the locking pin shown in Fig. 9.

Figs. 16 and 17 are front view and side view respectively of the disk for imparting the step by step rotation of the mandrel shaft.

Figs. 18 and 21 illustrate the release mechanism for the driving shaft, While Figs. 19 and 20 illustrate the mandrel shaft and plate holder.

Referring to Figs. 1 and 2 respectively of the appended drawings two systems of plotting on a square sensitive plate are shown. Plotting as shown by a. Fig. 1 has the advantage that it is never necessary to turn the camera to its side in order to obtain a change from the landscape (1) Fig. 2) to the portrait (a Fig. 2) shape or roportion, while Fig. 2 involves turning the camera to side when the change is required unless masking is adopted.

Let it be assumed that the lens is mounted opposite to b Fig. 2 and that a, b, and a are covered by an opaque mask. then the exposure will be on b and each of the four plate areas will come into position in due sequence as the plate or plate-system is made to rotate as hereinafter described.

Referring to Figs. 3, 4, 7, 10 and 11 of the drawings, 1 is the camera box having a hinged top 1, door 1 and aperture 1. Mounted in bearin on a support or bracket 2 (Figs. 7 and 20 secured by screws 3 to the base of said camera 1 is a spindle f hereinafter termed the mandrel spindle, and integral therewith is a plate holder 0. The plate is held in well known manner by the holder or' carrier a (see Figs. 19 and 20).. The mandrel spindle is also integral with a disk 9 (Figs. 3, 7 8 and 20 and equally spaced apart around the disk 9 are four ships 4 (Fig. 8) by which it is locked into de nite ositions by the entry of the looking pin (Fig. 3) into one of said stops 4. The means for operating the locking pin it is hereinafter referred to.

In front of the mandrel spindle and its allied parts is placed a partition 9, functioninggas a mask, attached by screws 10 to the This partition has an opening 11 (Figs. 3 and 4) to enable a plate area, a g., a when brought opposite the lens to be exposed as hereinafter re ferred to.

In front of the partition 9 is fixed a support 12 on which is mounted and fixed the lens or objertive apparatus '1 of ordinary expanding type (see Figs. 10 and 11). The lens is centered so that its axis is directed toward one of the four sections into which the plate is plotted for exposure.

The color screening is effected in well understood manner by a disk a fenestrated in four places, which disk is set in front of or behind the lens or objective (see Figs. 3, 7 and 10), and this fenestrated disk (hereinafter called the screen holder) is made to rotate in quarter-circle stages in alternating correspondence with the quarter-circle stages of the plate holder; the screen holder thus becoming an exposure shutter.

As shown in Figs. 3, 7 and 10 the screen holder n rotatably mounted in brackets 18 is in front of the lens or objective. The screen holder n has four openings 5, 6, 7 and 8 (Figs. 5 and 10) behind each of which openings is a sectorial cover 8 which can be adjusted so as to allow an appropriate illumination through each opening. As the present invention is independent of or apart from any special aspect of color screening for multiple or composite heliochromy, it is not necessary to define the nature of the color screens to be used excepting to say they should be in accordance with the known three color system and one exposure may be without a screen so that a print from the resulting negative may be used as a key in the assemblage of print elements. Further a four color system may be used, or a two color system, in which latter case two heliochromes may be taken by one complete cycle of the apparatus.

The control and operation of the plate holder g mounted on the mandrel spindle f, and the screen holder n is by a shaft mounted in brackets or standards 14, 14 (Figs. 3, 10 and 11) and parallel to that on which the plate holder or carrier is mounted, this shaft (hereinunder called the. driving shaft) having a tension of rotation communicated by a clock or other motor 11 (Fig. 1 1) of an convenient type, this tension of rotation eing prevented from} becoming actual rotation by a catch or pawl 15, (see Figs. 3, 18 and 2-1) engaging a projection l on said shaft 1', which may be freed at the will of the operator.

In Figs. 3'and 21 is shown a pneumatic bulb la which when expanded releases the catch or pawl 15 from the projection Z attached to the driving shaft 7' so as to allow this shaft to make one revolution under the drive of the clock 2'. The pneumatic bulb in is of usual construction and on the other side to that of the catch or pawl 15, bears against a fixed stop 16. A flexible tube 16 (Figs. 10 and 21) leads from the bulb is to the usual operating hand bulb or the like 1c (Fig. '10

A driving disk m, (Figs. 12 and 13) on the driving shaft is in even gearing (iwhether contact, tootl1,'l.nunl or chain) with the screen holder 'n.

i ()n the drivil'ig shaft and behind the disk m are two disks 1 and 0, l igs. ll) and 17, the disk 7), Figs. l-l and 15, con-trolling the periodical withdrawal of the pin it from one of the stops 4 on the disks g, and the disk 0 imparting the step by step rotation of the mandrel shaft f. The disk 7) is provided with tour projections t which press down the pivoted arm or stem 10 attached to the locking pin it (see Fig. 9) at appropriate times and thus withdraws the pin it from the appropriate stop 1, and when the disk g is thus unlocked the mutilated ear of the disk 0 comes into operation on the disk 9' and brings the plate holder to a new position. The pin it is provided with a suit able spring 17 to bring it. back intoe-ngagerncnt with the appropriate stop 4 in the disk g.

Instead of the driving shaft being freed to make one complete revolution under the drive of the motor it may be freed to have a range of action to make the camera self-acting for one complete stage of operations.

In operation assuming 6 Fig. 2 to be opposite the lens or objective 1" when the afo-re mentioned catch or pawl 15 releases the projection Z the driving shaft rotates and the followin movements are effected.

The disk inon the driving shaft j partially rotates the screen holder-n so that one fenestration for example 5, passes across the lens and makes an exposure on the area Z) of the plate.

The above mentioned exposure having been made the two disks 1) and 0 on the driving shaft come into operation, the disk p by virtue of the appropriate projection t thereon withdrawing the pin it that during exposure locked the mandrel spindle f through the intermediary of the disk 9 and its stops 4 on the mandrel spindle. The mandrel spindle is now made to rotate one fourth of a circle by the mutilated gear 0 partially r0- tating the disk 9 fixed to the mandrel spindle f. Thus another plate area is brought opposite to the lens and now the locking pin it again drops or springs into engagement with one of the aforesaid stops 4 on the disk 9.

A second aperture or fenestration of the screen holder now passes in front of the lens and the sequence of operations is repeated; there being in all four Sequences.

The present invention furnishes an a I paratus in compact form in which all adpistinents are ready made or fixed and adapted to the plates used so that complex ad ustments are avoided.

Analyzing screens of known type may be mounted immediately before the respective plate areas in which case the rotary screen holder n would become merely an exposing shutter and a regulator of the light for the respective exposures.

As a modification rollers or spools may be provided on the plate holder or carrier, by which a band of sensitive film can be drawn over the face thereof.

Fig. 6 shows a plate holder or carrier 6 on its mandrel spindle f and having two spools u, u mounted thereon a film '0 being shown as covering the surface of the plate holder 6.

What I claim is 1. A camera for multiple or composite heliochromy, comprising a mandrel spindle,

a face plate inte ral therewith, a carrier mounted thereon or a single color-sensitive surface plotted into exposure areas, lens or objective apparatus in front of said colorsensitive surface, a screen holder, means for imparting step-wise rotation to the screen holder and to the mandrel spindle, and means for controlling said rotation.

2. A camera for multiple or composite heliochromy, comprising a mandrel spindle, a face plate integral therewith, a carrier mounted thereon, a color-sensitive surface carried thereby, lens or objective apparatus in front of a unit-area of said color sensitive surface, a screen holder, means for imparting step-wise rotation to the screen holder and to the mandrel spindle and means for controlling said rotation.

3. A camera for multiple or composite heliochromy, comprising a mandrel spindle, a face plate integral therewith, a carrier mounted thereon for a single color-sensitive surface plotted into exposure areas, lens or objective ap aratus in front of said color sensitive sur ace, a screen holder, an exposing shutter, means for imparting step-wise rotation to the shutter and to the mandrel spindle and means for controlling said rotation.

4. A camera for multiple or composite heliochromy, comprising a mandrel spindle, a face plate integral therewith, a carrier mounted thereon for a single color-sensitive surface plotted into exposure areas, a disk integral with said mandrel spindle, a mask, and lens or objective apparatus in front of said color sensitive surface, a screen holder, a driving shaft, means for driving said shaft, means on said shaft for imparting stepwise rotation to the screen holder and to the disk on the mandrel spindle, a controlling disk on the mandrel spindle, a catch operatlng thereon, releasing means on the driving disk for said catch, and means for controlling the rotation of the driving disk.

5. A camera for multiple or composite heliochromy, comprising a mandrel spindle, a face plate integral therewith, a carrier mounted thereon. for a single color-sensitive surface plotted into exposure areas, a disk integral with said mandrel spindle, a mask, and lens or objective apparatus in front of said color sensitive surface, a screen holder, adjustable openings therein, a driving shaft, means for driving said shaft, means on said shaft for imparting stepwise rotation to the screen holder and to the disk on the mandrel spindle, a controlling disk on the mandrel spindle, a catch operating thereon, releasing means on the driving disk for said catch, and means for controlling the rotation of the driving disk.

In testimony whereof, I afiix my signature.

FRED JUDGE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

